Three identical vessels $A, B$ and $C$ contain same quantity of liquid. In each vessel balls of different densities but same masses are placed. In vessel $A,$ the ball is partly submerged; in vessel $B,$ the ball is completely submerged but floating and in vessel $C,$ the ball has sunk to the base. If $F_A, F_B$ and $F_C$ are the total forces acting on the base. If $F_A$ are the total forces acting on the base of vessels $A, B$ and $C,$ respectively, then

Figure shows a capillary tube $C$ dipped in a liquid that wets it. The liquid rises to at point. $A$ if we blow air through the horizontal tube $H,$ what will happen to the liquid column in the capillary tube?

Three liquid having densities ${\rho }_1, {\rho }_2$ and ${\rho }_3$ are filled in a U-tube. Length of each liquid column is equal column is equal to $l, {\rho }_1>{\rho }_2>{\rho }_3$ and liquids remain at rest (relative to the tube) in the position shown in the figure. It is possible that

In the figure shown, water is filled in a symmetrical container. Four pistons of equal area $A$ are used at the four openings to keep the water in equilibrium. Now an additional force $F$ is applied at each piston. The increase in the pressure at the centre of the container due to this addition is

A block of wood is floating in water in a closed vessel as shown in the figure. The vessel is connected to an air pump. When more air is pushed into the vessel, the block of wood floats with (neglect compressibility of water)